This paper will chronologically present the course of segregation, attempted extermination and sufferings of Roma in the Second World War. So far, a number of studies, books and historical-scientific texts have been written about the horrors of the genocide against the Roma, called Porajmos, which literally means "destruction" in the Romani language (Romani ćhib), but because of its other meaning, which is "rape", many Roma reject or replace it with the term Samudaripen, whose translation is "mass killing". Despite the fact that awareness of Roma sufferings is increasing every year, it is still insufficient compared to the amount of literature, and consequently general awareness of, for example, Jewish victims, especially in Croatia where Roma have lived for at least seven centuries. The point is not to compare numbers, but to acknowledge the victims of Roma and Sinti killed in the Second World War. Through the depiction of shocking and unimaginable crimes against humanity under the excuse of ethnic cleansing, an attempt will finally be made to penetrate the answer to the question of why is that so. Regarding the content of this paper, the analysis will be divided into chapters according to the years of the genocide, classified by concentration camps where crimes were committed, as well as an introduction and conclusion parts which will summarize the position and historical circumstances of Roma in Europe before and after Second World War. The greatest support regarding literature and research on the topic will be provided by the texts of linguist Ian Hancock, an in-depth trilogy of Roma in Second World War by numerous authors, the writer and romologist Rajko Đurić, as well as historian Danijel Vojak and others.